CHICAGO, IL - FEBRUARY 07: Kia introduces the Cross GT Concept car at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Kia introduces the Cross GT Concept car at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will ... more

CHICAGO, IL - FEBRUARY 07: Toyota introduces the 2014 Tundra pickup truck at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Toyota introduces the 2014 Tundra pickup truck at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, ... more

CHICAGO, IL - FEBRUARY 07: Bill Fay, Toyota's group vice president and general manager, introduces the 2014 Tundra pickup truck at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Bill Fay, Toyota's group vice president and general manager, introduces the 2014 Tundra pickup truck at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago ... more

CHICAGO, IL - FEBRUARY 07: Members of the press look at the motor in Chevrolet's 2014 Cruze with a 2.0 turbo diesel at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Members of the press look at the motor in Chevrolet's 2014 Cruze with a 2.0 turbo diesel at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one ... more

Photo: Scott Olson, Getty Images

CHICAGO, IL - FEBRUARY 07: Members of the press look at the motor... Photo-4176632.56629 - Houston Chronicle

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CHICAGO, IL - FEBRUARY 07: Philip Zambrano details a 2014 Jaguar F-Type S at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Philip Zambrano details a 2014 Jaguar F-Type S at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, ... more

CHICAGO, IL - FEBRUARY 07: Cristi Landy, small car marketing director for Chevrolet, introduces the 2014 Cruze with a 2.0 turbo diesel motor at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Cristi Landy, small car marketing director for Chevrolet, introduces the 2014 Cruze with a 2.0 turbo diesel motor at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. ... more

CHICAGO, IL - FEBRUARY 07: Nissan displays their 2013 Juke NISMO (L) and the 2014 370Z NISMO edition at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Nissan displays their 2013 Juke NISMO (L) and the 2014 370Z NISMO edition at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest ... more

CHICAGO, IL - FEBRUARY 07: Visitors look over Hyundai cars during a media preview day at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Visitors look over Hyundai cars during a media preview day at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in ... more

CHICAGO, IL - FEBRUARY 07: Kia displays the DC Comics Superman Edition Optima Hybrid at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Kia displays the DC Comics Superman Edition Optima Hybrid at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in ... more

CHICAGO, IL - FEBRUARY 07: A visitor looks the Audi RS5 during the media preview at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: A visitor looks the Audi RS5 during the media preview at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the ... more

CHICAGO, IL - FEBRUARY 07: Superman in shown in the rear window of the Kia DC Comics Superman Edition Optima Hybrid at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Superman in shown in the rear window of the Kia DC Comics Superman Edition Optima Hybrid at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one ... more

CHICAGO, IL - FEBRUARY 07: Porsche displayes their Cayman during a media preview day at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. less

CHICAGO, IL - FEBRUARY 07: Porsche displayes their Cayman during a media preview day at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in ... more